diff options
Diffstat (limited to 'src/libXvMC/context.c')
| -rw-r--r-- | src/libXvMC/context.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/libXvMC/context.c b/src/libXvMC/context.c new file mode 100644 index 00000000000..760e012d1a8 --- /dev/null +++ b/src/libXvMC/context.c @@ -0,0 +1,196 @@ +#include <assert.h> +#include <X11/Xlib.h> +#include <X11/extensions/XvMClib.h> +#include <pipe/p_context.h> +#include <vl_display.h> +#include <vl_screen.h> +#include <vl_context.h> +#include <vl_winsys.h> + +static Status Validate +( + Display *display, + XvPortID port, + int surface_type_id, + unsigned int width, + unsigned int height, + int flags, + int *chroma_format, + int *mc_type +) +{ + unsigned int found_port = 0; + unsigned int found_surface = 0; + XvAdaptorInfo *adaptor_info; + unsigned int num_adaptors; + int num_types; + unsigned int max_width, max_height; + Status ret; + unsigned int i, j, k; + + assert(display && chroma_format); + + ret = XvQueryAdaptors(display, XDefaultRootWindow(display), &num_adaptors, &adaptor_info); + if (ret != Success) + return ret; + + /* Scan through all adaptors looking for this port and surface */ + for (i = 0; i < num_adaptors && !found_port; ++i) + { + /* Scan through all ports of this adaptor looking for our port */ + for (j = 0; j < adaptor_info[i].num_ports && !found_port; ++j) + { + /* If this is our port, scan through all its surfaces looking for our surface */ + if (adaptor_info[i].base_id + j == port) + { + XvMCSurfaceInfo *surface_info; + + found_port = 1; + surface_info = XvMCListSurfaceTypes(display, adaptor_info[i].base_id, &num_types); + + if (surface_info) + { + for (k = 0; k < num_types && !found_surface; ++k) + { + if (surface_info[k].surface_type_id == surface_type_id) + { + found_surface = 1; + max_width = surface_info[k].max_width; + max_height = surface_info[k].max_height; + *chroma_format = surface_info[k].chroma_format; + *mc_type = surface_info[k].mc_type; + } + } + + XFree(surface_info); + } + else + { + XvFreeAdaptorInfo(adaptor_info); + return BadAlloc; + } + } + } + } + + XvFreeAdaptorInfo(adaptor_info); + + if (!found_port) + return XvBadPort; + if (!found_surface) + return BadMatch; + if (width > max_width || height > max_height) + return BadValue; + if (flags != XVMC_DIRECT && flags != 0) + return BadValue; + + return Success; +} + +static enum vlProfile ProfileToVL(int xvmc_profile) +{ + if (xvmc_profile & XVMC_MPEG_1) + assert(0); + else if (xvmc_profile & XVMC_MPEG_2) + return vlProfileMpeg2Main; + else if (xvmc_profile & XVMC_H263) + assert(0); + else if (xvmc_profile & XVMC_MPEG_4) + assert(0); + else + assert(0); + + return -1; +} + +static enum vlEntryPoint EntryToVL(int xvmc_entry) +{ + return xvmc_entry & XVMC_IDCT ? vlEntryPointIDCT : vlEntryPointMC; +} + +static enum vlFormat FormatToVL(int xvmc_format) +{ + switch (xvmc_format) + { + case XVMC_CHROMA_FORMAT_420: + return vlFormatYCbCr420; + case XVMC_CHROMA_FORMAT_422: + return vlFormatYCbCr422; + case XVMC_CHROMA_FORMAT_444: + return vlFormatYCbCr444; + default: + assert(0); + } + + return -1; +} + +Status XvMCCreateContext(Display *display, XvPortID port, int surface_type_id, int width, int height, int flags, XvMCContext *context) +{ + int chroma_format; + int mc_type; + Status ret; + struct vlDisplay *vl_dpy; + struct vlScreen *vl_scrn; + struct vlContext *vl_ctx; + struct pipe_context *pipe; + + assert(display); + + if (!context) + return XvMCBadContext; + + ret = Validate(display, port, surface_type_id, width, height, flags, &chroma_format, &mc_type); + if (ret != Success) + return ret; + + /* XXX: Assumes default screen, should check which screen port is on */ + pipe = create_pipe_context(display, XDefaultScreen(display)); + + assert(pipe); + + vlCreateDisplay(display, &vl_dpy); + vlCreateScreen(vl_dpy, XDefaultScreen(display), pipe->screen, &vl_scrn); + vlCreateContext + ( + vl_scrn, + pipe, + width, + height, + FormatToVL(chroma_format), + ProfileToVL(mc_type), + EntryToVL(mc_type), + &vl_ctx + ); + + context->context_id = XAllocID(display); + context->surface_type_id = surface_type_id; + context->width = width; + context->height = height; + context->flags = flags; + context->port = port; + context->privData = vl_ctx; + + return Success; +} + +Status XvMCDestroyContext(Display *display, XvMCContext *context) +{ + struct vlContext *vl_ctx; + struct pipe_context *pipe; + + assert(display); + + if (!context) + return XvMCBadContext; + + vl_ctx = context->privData; + + assert(display == vlGetNativeDisplay(vlGetDisplay(vlContextGetScreen(vl_ctx)))); + + pipe = vlGetPipeContext(vl_ctx); + vlDestroyContext(vl_ctx); + destroy_pipe_context(pipe); + + return Success; +} |